Hi Geert, > > + dmac->dev->dma_parms = &dmac->parms; > > + dma_set_max_seg_size(dmac->dev, 0x01000000); > > That is one too much, cfr. > > drivers/dma/sh/rcar-dmac.c:#define RCAR_DMATCR_MASK 0x00ffffff
I see. Will fix and send an updated patch. Nice to see that I was not totally wrong but just off-by-one. > And yes, this depends on the data length, which is not known at probe time. > Of course, dma_set_max_seg_size(dmac->dev, RCAR_DMATCR_MASK) > should be safe, albeit (slightly) suboptimal. True. But still *way* better than the current default of 64K. Thanks for the heads up! Regards, Wolfram
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